/V Displays all lines NOT containing the specified string.
/C Displays only the count of lines containing the string.
/N Displays line numbers with the displayed lines.
/I Ignores the case of characters when searching for the string.
/OFF[LINE] Do not skip files with offline attribute set.
"string" Specifies the text string to find.
[drive:][path]filename
Specifies a file or files to search.

If a path is not specified, FIND searches the text typed at the prompt
or piped from another command.

C:\Symbian\UIQ3.1SDK\epoc32>grep
'grep' is not recognized as an internal or external command,
operable program or batch file.
And that’s why I’m installing Cygwin on my computer now…